Wu said that according to US SEC documents, MicroStrategy purchased another 7,420 bitcoins between September 13 and September 19, worth about $458.2 million, with an average purchase price of $61,750. The latest acquisition coincided with MicroStrategy's completion of a $1.01 billion additional convertible bond issuance. MicroStrategy currently holds 252,220 BTC, worth about $15.8 billion, with an average purchase price of $39,266, and a total cost of about $9.9 billion.